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为了提高旋流泵的扬程与效率,基于雷诺时均Navier-Stokes方程和标准kε-湍流模型,应用三维无结构四面体网格及Simplec算法,利用计算流体力学软件Fluent对3种不同高度差叶片旋流泵的水力性能进行了数值模拟,得到其内部流场的速度分布和压力分布情况,揭示了旋流泵在不同叶片高度时的运动规律,并对数值模拟结果进行了试验验证.结果表明:旋流泵内部存在较强的纵向旋涡和轴向旋涡,高低叶片可以改善旋流泵内部的流动情况,提高旋流泵的扬程与效率.试验研究证明了模拟结果的正确性,当旋流泵叶片的高度相差8%左右时,扬程提高0.15 m,效率提高约3%.
In order to improve the lift and efficiency of the hydrocyclone, based on the Reynolds-averaged Navier-Stokes equation and the standard kε-turbulence model, three-dimensional unstructured tetrahedron grids and Simplec algorithm were used to calculate the lift and efficiency of the hydrocyclone. Three different height- The hydraulic performance of the hydrocyclone was numerically simulated, the velocity distribution and pressure distribution of the internal flow field were obtained, and the motion of the vortex pump at different vane height was revealed. The numerical simulation results were verified by experiments. : There is a strong longitudinal vortex and axial vortex inside the swirl pump, high and low vanes can improve the flow inside the swirl pump and improve the lift and efficiency of the swirl pump.Experimental research proves the correctness of the simulation results, when the swirl When the height of the pump blades is about 8%, the head lift is 0.15 m and the efficiency is improved by about 3%.